The STREAM pilot sites were chosen carefully to present the diversity in geographical, economic, size and type of the consumers. All the pilots focus on a specific part of STREAM Ecosystem but complement each other to form a comprehensive testing ground of all the elements of STREAM Ecosystem.

  • Partner countries
  • Pilot sites

Location

Ajdovščina, Slovenia

Sector

Industrial park

Summary

The Slovenian pilot site encompasses an industrial park in the town of Ajdovščina, located in the south-western part of Slovenia. It comprises approximately 340 industrial and commercial buildings connected to the power network managed by the DSO Elektro Primorska (STREAM partner EPR).

Goals

  1. Creation of flexibility aggregation platform sFLEX
  2. Development and implementation of the Device Registry, including a prequalification protocol to validate and verify flexibility assets
  3. Develop and deploy a distribution grid management platform (sGRID) to enhance the DSO’s grid observability and controllability
  4. Develop and deploy a market platform sMART, used for the establishment of a local flexibility market in the Slovenian pilot site

Scope

The Slovenian pilot site encompasses an industrial park in the town of Ajdovščina, located in the south-western part of Slovenia. It comprises approximately 340 industrial and commercial buildings connected to the power network managed by the DSO Elektro Primorska. Electrical power is supplied via two 20 kV medium voltage feeders and ten 20 kV/0.4 kV transformer substations. Whilst majority of customers are connected to LV distribution network, several larger industrial customers are connected directly to the MV network. As the existing power network within industrial park in Ajdovščina does not require any significant upgrade to facilitate the implementation of the proposed pilot project, the key step for gauging overall potential is evaluating the available flexibility of a sample of companies present in the pilot site, with most of whom the letters of intent for STREAM involvement have already been signed. Based on the information provided, the aggregated peak power of the sample is approximately 9.4 MW and preliminary field analyses, we estimate that roughly 2 MW of this capacity can be used to provide flexibility services to a flexibility service provider, DSO or TSO. 

Timeline

October 2022 (M1):

STREAM project kick-off

December 2023 (M3):

Start of visits to pilot site companies by KOL and AVA

March 2023 (M6):

Definitions of initial version of pilot site services and research questions

April 2023 (M7):

KOL successfully engaged seven of the pilot site companies and performed several technical services (feasibility study for deploying BESS and EV charging stations, eligibility study for passive monetization)

May 2023 (M8):

AVA successfully motivated two companies for active participation in STREAM by installing four new EV charging stations

September 2023 (M12):

EPR data preparation (topology, measurement data from smart meters)

October 2023 (M13):

SI pilot initial local flexibility market design outlined

December 2023 (M15):

Refinement of the SI pilot local flexibility market design, definition of flexible connection agreements

January 2024 (M16):

Connection of several pilot site assets to sFLEX is established

February 2024 (M17):

Several workshops performed, feedback used to refine services

March 2024 (M18):

Final versions of services, use cases, requirements and KPIs for the SI pilot site

April 2024 (M19):

Definition of SI pilot site deployment plan, update to the risk log

May 2024 (M20):

Start of development of sPLAN and sDATA tools

June 2024 (M21):

Start of development of sMART and sGRID tools